16 channel 12 bit Fm+I2C bus PWM Controller


CJMCU-PCA9685 16 channel 12 bit Fm+I2C bus PWM controller steering engine control module
16 LED drives, each output can be programmed as:
Programmable LED brightness
Programmable group fuzzy (DIM) / flicker with separate LED brightness blend
1MHz fast mode Plus compatible with 30mA on the SDA has a high drive capability of the I2C bus interface to drive the high capacity bus
Each LED output can be achieved from completely off (the default) to the maximum brightness of the 4096 level (12 bit) linear programmable brightness
Software can be programmed to open drain output LED option (the default for the push-pull) 16 push-pull output (in 5V can absorb 25mA sink current and to provide a current of 10mA), no input function
The output state can be programmed to change at the time of the response or stop command, to achieve the simultaneous update of all output or byte by byte (byte-by-byte) update output (default to "stop command changes").
Low effective output enable input pin, when the pin is high LED output can be programmed to 0, 1 or high resistance state (up to the power of the default high resistance)
6 hardware address pins make the same I2C bus can be connected to 62 PCA9685 devices
LED output frequency (all LED) is typically 40Hz to 1000Hz (when the oscillator is 25MHz, the default value of the pre divided frequency register 1EH will generate 200Hz refresh rate).
Four software programming I2C bus address (a LED group call (call) address and three led the son call (call) address) makes the device group can be in any combination in the same time is addressed (e.g., a register for "all call all call)" so the I2C bus all PCA9634 device all can at the same time is addressed, and the second register for three different address, then in a device group in 1 / 3 of the bus equipment can be addressed at the same time), software enabling and disabling the I2C bus.
SWRST (Call) enables the device to reset the device through the I2C bus.
25MHz crystal, no external devices
Maximum allowable 50MHz external input clock
Internal power on reset
Noise filter at the SDA/SCL input
Output pin has edge generation rate control
There is no burr (glitch) output on power up.
Support thermal access
Low standby current
Operating voltage range: 2.3V to 5.5V
Can withstand 5.5V input
Can work in minus 40 degrees Celsius to 85 degrees Celsius in the environment
ESD protection over HBM/JESD22-A114200V MM/JESD22-A115 2000V and CDM/JESD22-C101 1000V
JEDEC standard 100mA into lock test when exceeds JESD78
Package: TSSOP28 and HVQFN28

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